Disposable drain brush



FIG. 1 is a front perspective view of a disposable drain brush.

FIG. 2 is a front view of the disposable drain brush.

FIG. 3 is a back view of the disposable drain brush.

FIG. 4 is a right side view of the disposable drain brush.

FIG. 5 is a left side view of the disposable drain brush.

FIG. 6 is a top view of the disposable drain brush; and,

FIG. 7 is a bottom view of the disposable drain brush. 

CLAIM The ornamental design for a disposable drain brush, as shown and described. 